These are the best AA rechargeables that you can buy in the market. They hold charges surprisingly well, and so despite they're rated only at 2000mmAh, they last much longer than typical rechargeables.
I bought the first pack for my digital camera, but then I bought some more packs for other stuff like my Canon 10x30 IS, and later I bought some more to power my Firewire hubs which drives my DMK 31AF03 in the field. Now, I've sold my DMK and where shall I use these batteries? At the same time, my digital camera has less usage after I got my DSLR.
Yes, it's my newly acquired iOptron Cube! A local friend has tested it on rechargeables and they can last for 6 hours, and therefore, it's more than enough for my observation habbit and that makes it super portable as well, no more SLA battery.
Today I counted them all, and I've four packs of Eneloop at home. Two packs for my iOptron Cube, half pack for my Canon 10x30 IS, and one pack for my DC, and there're still two left for other purpose, like the toys of my kids.